The issue isn't wanting a full-on "No Deal", but what the alternative is. The current "deal"(ie withdrawal agreement) has a permanent customs union, and implied freedom of movement as a highly likely outcome.
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		| Currently, there are no border posts, physical barriers or checks on  people or goods crossing the border between Northern Ireland and the  Republic of Ireland.  The backstop is a measure in the withdrawal  agreement designed to ensure that continues after the UK leaves the EU.  It comes into effect only if the deal deciding the future relationship  between the UK and EU is not agreed by the end of the transition period  (31 December 2020). Until the deal on the future relationship is done,  the backstop would keep the UK effectively inside the EU's customs union  but with Northern Ireland also conforming to some rules of the single  market. Critics say a different status for Northern Ireland could  threaten the existence of the United Kingdom and fear that the backstop  could become permanent. |